Views: 0 Author: Site Editor Publish Time: 2025-04-18 Origin: Site
As a leading manufacturer in solid-liquid separation technology, GN continues to expand its global footprint with customized dewatering solutions. The recent export of GNLW654-VFD Decanter Centrifuges and GNSJY2000 Flocculation Dosing Systems to overseas clients highlights the company’s engineering excellence and adaptability to diverse industrial requirements.
1. GNLW654-VFD Decanter Centrifuge: Precision in Motion
Working Principle
The GNLW654-VFD operates on continuous sedimentation principles. The rotating drum (1,800–3,200 rpm) generates centrifugal forces up to 3,200×g, separating solids from liquids based on density differences. A helical conveyor, rotating at a slightly slower speed (5–30 rpm differential), transports settled solids toward the discharge ports while clarified liquid exits through adjustable weir plates.
Performance Highlights
Advanced Material Engineering: The drum, spiral core shaft, and end covers are fabricated from duplex stainless steel SUS2205, offering exceptional corrosion resistance for aggressive sludge environments. Critical wear zones (e.g., solids discharge ports) feature replaceable tungsten carbide sleeves, extending service life by 300% compared to conventional alloys.
Intelligent Control: A PLC-driven VFD system enables real-time adjustments to drum speed and differential torque. Integrated sensors monitor vibration, temperature, and torque, triggering automatic shutdowns to prevent mechanical failures.
Customized Adaptability: The 654-mm drum diameter and 3.5:1 length-to-diameter ratio optimize retention time for sludges with varying particle sizes (5–500 µm).
2. GNSJY2000 Flocculation Dosing System: Chemistry Meets Automation
Working Principle
This system automates polymer preparation and injection. Dry flocculant is hydrated in a maturation tank with precise water-to-powder ratios (0.1%–0.3% concentration), then injected into sludge streams via progressive cavity pumps. The PLC calculates dosing rates based on real-time sludge feed data from centrifuge sensors.
Performance Highlights
Dosing Accuracy: ±2% flow control accuracy through servo-driven powder feeders and magnetic flowmeters, ensuring optimal flocculant consumption (0.3–1.2 kg per ton of sludge).
Low-Maintenance Design: Self-cleaning strainers and quick-disconnect pipe couplings minimize downtime during maintenance.
Process Integration: Modbus RTU protocol synchronization with GNLW654-VFD allows closed-loop adjustments to polymer dosage based on centrifuge cake dryness (target: 70%–85% solids)
Global Validation
Recent deployments in European wastewater plants demonstrate the system’s capabilities:
Throughput: 40–60 m³/hr sludge processing with 12–18 kW power consumption.
Dewatering Efficiency: Achieved 82% solids recovery rate for municipal sludge with <500 mg/L residual turbidity in centrate.
Operational Uptime: 7,200+ hours MTBF (Mean Time Between Failures) in continuous operation.
Conclusion
The GNLW654-VFD and GNSJY2000 embody GN’s commitment to delivering robust, intelligent dewatering solutions. By combining wear-resistant material science with adaptive automation, these systems address the core challenges of modern sludge treatment—reducing disposal costs while maximizing operational reliability. As global industries prioritize sustainable waste management, GN’s technology stands poised to set new benchmarks in dewatering performance across continents.